CN204464941U - A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero - Google Patents
A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero Download PDFInfo
- Publication number
- CN204464941U CN204464941U CN201520087224.0U CN201520087224U CN204464941U CN 204464941 U CN204464941 U CN 204464941U CN 201520087224 U CN201520087224 U CN 201520087224U CN 204464941 U CN204464941 U CN 204464941U
- Authority
- CN
- China
- Prior art keywords
- thyristor
- phase
- zero
- circuit breaker
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Breakers (AREA)
Abstract
The utility model discloses a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero; comprise the tripping coil be connected on successively on phase alignment circuit, the first thyristor, the second thyristor; described first thyristor is extremely all connected with one-chip computer module with the control of the second thyristor, is connected between described first thyristor and the second thyristor with zero line.The beneficial effects of the utility model are: 1, the realization of protection off zero: when zero line disconnects, and first, second thyristor accepts the output pulse from one-chip computer module, first, second turn on thyristors, and tripping coil starts action and drives circuit breaker tripping; 2, the realization of open-phase protection: when any phase of A, B, C or any two-phase lack simultaneously, tripping coil, the first thyristor and zero line form loop, reach the object of open-phase protection.3, overvoltage, under voltage protection are as the same.
Description
Technical field
The utility model relates to a kind of circuit breaker accessory, is specifically related to a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero.
Background technology
at low voltage three-phase multiple-way system (TN-C three-phase and four-line A, B, C, PEN; TN-S(TN-C-S) Three-phase five-wire A, B, C, N, PE) in distribution system, A, B, C are phase (fire) line, and N line is working zero line (neutral line); in ground protection system, " zero ground " line separately.No matter be in TN-C or TN-S wiring system, PE line is all under any circumstance never allow to disconnect.N line is then had ready conditions and can be disconnected, namely N line all must disconnect with A, B, C phase line (stricti jurise being said N line could must disconnect after A, B, C phase line disconnects), otherwise occur causing the unfortunate event of people and equipment, therefore, allowing N line to disconnect obviously can only be just passable in TN-S wiring.But the N line that is in operation can not disconnect, disconnect i.e. generation " off zero " fault as there is N line.
The reason that N line disconnects is:
1, threephase load is seriously uneven, and N line current is excessive, and the N line that accumulates over a long period blows;
If 2 N tape contacts, contact is bad even disconnects (not contacting);
3, Natural Damage or artificial theft N line.
For a long time, the N line that is in operation disconnects i.e. " off zero " fault and happens occasionally, under there is single-phase load situation, threephase load scarcely balances, and causes neutral displacement, when there is fault off zero, initiation phase voltage is raised suddenly, overflow phasing voltage more than 1.3 times, single-phase device damage, threephase motor certainly will be caused so normally to run, and What is more also may cause casualties.
For solving the problems of the technologies described above; the applicant invents a kind of circuit breaker with default-phase protection function off zero; this circuit breaker directly connects the high voltage source of AC380V or AC220V; dropout module in circuit breaker is also work under hyperbaric environment; traditional low-voltage circuit breaker module adopts thyristor control technology; in most cases thyristor works at lower voltages, and the dropout module of low-voltage circuit breaker does not have and carries out the function of threading off according to off zero and default phase signal respectively.
Summary of the invention
in order to overcome the deficiencies in the prior art, the utility model provides a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero.
The utility model solves the technical scheme that its technical problem adopts:
A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero; comprise the tripping coil be connected on successively on phase alignment circuit, the first thyristor, the second thyristor; described first thyristor is extremely all connected with one-chip computer module with the control of the second thyristor, is connected between described first thyristor and the second thyristor with zero line.
In the utility model, described first thyristor is parallel with grading resistor I.
In the utility model, described second thyristor is parallel with grading resistor II.
In the utility model, between described first thyristor and one-chip computer module, be provided with optical coupling isolator I and filter capacitor I.
In the utility model, between described second thyristor and one-chip computer module, be provided with optical coupling isolator II and filter capacitor II.
The beneficial effects of the utility model are: 1, the realization of protection off zero: when zero line disconnects, and first, second thyristor accepts the output pulse from one-chip computer module, first, second turn on thyristors, and tripping coil starts action and drives circuit breaker tripping; 2, the realization of open-phase protection: when any phase of A, B, C or any two-phase lack simultaneously, tripping coil, the first thyristor and zero line form loop, reach the object of open-phase protection.3, overvoltage, under voltage protection are as the same.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is further illustrated:
Fig. 1 is the structural representation of the present embodiment.
Embodiment
With reference to Fig. 1; the utility model provides a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero; comprise tripping coil 2, first thyristor 3, second thyristor 4 be connected on successively on phase alignment circuit 1; described first thyristor 3 is extremely all connected with one-chip computer module 5 with the control of the second thyristor 4, is connected between described first thyristor 3 and the second thyristor 4 with zero line 6.
As preferred embodiment, described first thyristor 3 is parallel with grading resistor I 7, described second thyristor 4 is parallel with grading resistor II 8.Make the voltage at two thyristor two ends keep balance by two grading resistors, reduce the generation of failure rate.
Further, for reducing interference, between described first thyristor 3 and one-chip computer module 5, optical coupling isolator I 9 and filter capacitor I 10 is provided with.Optical coupling isolator II 11 and filter capacitor II 12 is provided with between described second thyristor 4 and one-chip computer module 5.
The foregoing is only preferred embodiments of the present utility model, as long as the technical scheme realizing the utility model object with basic same approach all belongs within protection range of the present utility model.
Claims (5)
1. one kind is applied to the high pressure tripping mechanism on phase-defect protection circuit breaker off zero; it is characterized in that: comprise the tripping coil (2) be connected on successively on phase alignment circuit (1), the first thyristor (3), the second thyristor (4); described first thyristor (3) is extremely all connected with one-chip computer module (5) with the control of the second thyristor (4), is connected between described first thyristor (3) and the second thyristor (4) with zero line (6).
2. a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero according to claim 1, is characterized in that: described first thyristor (3) is parallel with grading resistor I (7).
3. a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero according to claim 1 and 2, is characterized in that: described second thyristor (4) is parallel with grading resistor II (8).
4. a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero according to claim 1, is characterized in that: be provided with optical coupling isolator I (9) and filter capacitor I (10) between described first thyristor (3) and one-chip computer module (5).
5. a kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero according to claim 1 or 4, is characterized in that: be provided with optical coupling isolator II (11) and filter capacitor II (12) between described second thyristor (4) and one-chip computer module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087224.0U CN204464941U (en) | 2015-02-06 | 2015-02-06 | A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087224.0U CN204464941U (en) | 2015-02-06 | 2015-02-06 | A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204464941U true CN204464941U (en) | 2015-07-08 |
Family
ID=53671768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087224.0U Active CN204464941U (en) | 2015-02-06 | 2015-02-06 | A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204464941U (en) |
-
2015
- 2015-02-06 CN CN201520087224.0U patent/CN204464941U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202994892U (en) | Power supply failure detection unit | |
| CN201234130Y (en) | Lightning arrester circuit for communication equipment | |
| CN204464944U (en) | A kind of circuit breaker with default-phase protection function off zero | |
| CN203312823U (en) | Self-coupling voltage regulating type reactive compensation device | |
| CN204464941U (en) | A kind of high pressure tripping mechanism be applied on phase-defect protection circuit breaker off zero | |
| CN204465372U (en) | A kind of single-chip microcomputer power supply circuits be applied on phase-defect protection circuit breaker off zero | |
| CN203617678U (en) | Power supply system used for automatic reclosing breaker | |
| CN203352465U (en) | DC stabilized power supply suitable for oil field and oil well remote measurement and control system | |
| CN204794065U (en) | Electric leakage circuit breaker thunderbolt surge protection circuit | |
| CN204464947U (en) | A kind of signal sampling device be applied on phase-defect protection circuit breaker off zero | |
| CN204230905U (en) | Group wells Time-sharing control device | |
| CN203617102U (en) | Transformer stabilizing winding lightning protection system | |
| CN203537253U (en) | Parallel connection structure for switching power supplies | |
| CN203397430U (en) | Circuit breaker for prepaid electricity meter | |
| CN2622938Y (en) | High voltage preventive protector for communication line | |
| CN202797941U (en) | Voltage fluctuation and flickering suppressor for power supply system | |
| CN201699422U (en) | Output circuit for three-phase power voltage stabilizer | |
| CN201282328Y (en) | Motor protector with single-phase grounding protection | |
| CN204258298U (en) | A kind of low-pressure energy-saving stable-pressure device | |
| CN205283108U (en) | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation | |
| CN205029571U (en) | Super wide input voltage's isolation power | |
| CN203933592U (en) | A kind of photoelectricity Isolation input Acquisition Circuit of low-power consumption | |
| CN208508521U (en) | A kind of protection circuit for resisting surge voltage impact and anti-over-voltage and over-current | |
| CN104682742A (en) | Single-chip microcomputer power supply circuit applied to faulted neutral line and open phase protection circuit breaker | |
| CN203951162U (en) | Elevator safety protection checkout gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |